How to understand the die cutting problem of unit type flexo printing machine

How to understand the die cutting problem of unit type flexo printing machine

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Compared with the wide flexo press, one of the biggest features of the unit flexo press is that it can be die-cut, and most of them use round and round, because the flat die-cutting die-cutting mechanism is more complicated. Will reduce the speed of the printing press. The flexo press is usually equipped with a die-cutting station. The die-cutting station includes a gear-driven undercut roller, a "slot" for fixing the die cutter and the bottom anvil roller, and a set of machine-wall panels. A component that applies pressure to the die cutter and adjusts the pressure. The structural strength, stiffness and maintainability of the die-cutting station are key factors in die-cutting.

The round die cutter is the same as the plate cylinder and can be longitudinally registered. Ordinary monolithic die cutters are generally made by machining. Firstly, different grades of tool steel should be selected according to the condition of the printing material and the processing amount. After high-precision CNC machining, the shape of the blade is formed, and then the surface hardening treatment is performed. Finally, the blade is manually refined under the microscope, and then the machine is tested. Die cutting. This die-cutting knife can be die-cut for about 1 million times. After the blade is blunt, it can be ground. A pair of die-cutting knives can be repaired several times. The number of die-cutting is about 800,000 times after each grinding. If properly maintained, the service life of the die cutter is a total of 3.5 million die cuts.